Chart stars Union J, who signed copies of their new album for hundreds of Sheffield fans at the Morrisons store in Hillsborough, revealed they are likely to perform live with pop pals The Vamps.

Union J were at Morrisons, Hillsborough, to sign copies of their album to the fans who had been queing the length of the building outside

Union J will support them on an arena tour, including a date at Sheffield’s Motorpoint on April 24.

The Vamps have already featured on a version of Union J’s latest single, currently number two in the UK charts, the album’s title track, You Got It All.

But in an exclusive chat Union J’s Josh Cuthbert, with JJ Hamblett, Jaymi Hensley and George Shelley, let slip they might perform together.

VIDEO: Press the play button to watch our video report.

Union J were at Morrisons, Hillsborough, to sign copies of their album to the fans who had been queing the length of the building outside

Josh said: “I think it probably will happen. Not to ruin a surprise, but I think it will.”

Asked whether they might do as McFly and Busted did, creating supergroup McBusted, Jaymie joked they could be called Union Vamps and Josh suggested VampUJ.

Teenage fans queued up to seven and a half hours outside in the cold to meet the band, get their albums signed and take selfies with the quartet at Morrisons, in Penistone Road.

Molly Partridge, aged 18, from Doncaster, had been at the front of the queue since 8am. She said:”People think I’m crazy but they are worth it. Everyone is talking about how early we got here. A lot turned up after school.”

Union J were at Morrisons, Hillsborough, to sign copies of their album to the fans who had been queing the length of the building outside

Ella Louise Taylor, 13, from Sheffield, was in tears after meeting her idols. She said: “They mean the world to me. They have changed my life, in so many ways.”

Band member George said: “Meeting fans is one of the most important things for anyone in this line of business - giving them something back for everything they have done for us over the past year.”

JJ added: “Without our fans we wouldn’t be where we are today. This is our second album signing so it’s amazing for us to be here in Sheffield seeing all our fans.”

Jaymi explained they hope to get two more singles out before the Vamps support tour and are planning lots of appearances throughout Europe,

Union J fans who had been queing since 8am in in the morning at Morrisons, Hillsborough waiting for their copies of the new album to be signed

Josh explained how they reacted to getting to number two in this week’s singles chart with You’ve Got It All.

He said: “We woke up on the Monday the single was out and it was number one on the iTunes chart. It’s an amazing feeling. It’s just been an incredible last few weeks.

“To get a number two, just behind Ed Sheeran, ahead of Take That and Taylor Swift - it’s just an incredible feeling. It’s been a great end to the year.”

* Tickets for The Vamps and Union J gig at Sheffield Motorpoint Arena on April 24 are £10.45 to £87.45, may be subject to fees. Buy in person, call 0114 256 5656 or visit www.motorpointarenasheffield.co.uk.